Semantics

Semantics are a form of meta information about what kind of information a property takes.

Name	Type	Group	unit	Parent semantic	Description
Age	Integer	time	second		Describes the age of a person or thing
Airpressure	Float	pressure	pascal	Pressure	Defines the airpressure (for weather)
Airtemperature	Float	temperature	°C	Temperature	Defines the air temperature (for weather)
Bistate	Boolean				Abstract semantic for things that can have two states (like "on" or "off")
Capacity	Integer	capacity	Byte		Defined the capacity of a computer item (like harddisk)